高二下学期月考物理理科 无答案Word文件下载.docx
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B.、都将变亮
C.变亮、变暗
D.变暗、变亮
5.下列四个实验现象中,不能表明电流能产生磁场的是()
A.甲图中,导线通电后磁针发生偏转
B.乙图中,通电导线在磁场中受到力的作用
C.丙图中,当电流方向相同时,导线相互靠近
D.丁图中,当电流方向相反时,导线相互远离
6.穿过闭合回路的磁通量Φ随时间t变化的图象分别如下图中①~④所示.下列关于回路中产生的感应电动势的论述中正确的是( )
A.图①中回路产生的感应电动势恒定不变
B.图②中回路产生的感应电动势一直在变大
C.图③中回路在0~t1时间内产生的感应电动势小于在t1~t2时间内产生的感应电动势
D.图④中回路产生的感应电动势先变小后变大
7.如图所示,把金属圆环匀速拉出矩形有界磁场,下面叙述正确的是()
A.向左拉出和向右拉出所产生的感应电流方向相反
B.不管向什么方向拉出,产生感应电流方向都是顺时针
C.向右匀速拉出时,感应电流大小不变
D.要将金属环匀速拉出,拉力大小不改变
8.一束带电粒子,从容器A下方的小孔S1,飘入加速电场,然后让粒子经小孔S2、S3垂直进入匀强磁场中做匀速圆周运动,最后打在照相底片上的同一点D,如图所示.则这些粒子()
A.电荷量与质量的比值一定相同
B.电荷量一定不同
C.质量一定相同
D.电荷量一定相同
9.如下图所示,在通电直导线下方,有一电子沿平行导线方向以速度v开始运动,则 ()
A.将沿轨迹I运动,半径越来越小
B.将沿轨迹I运动,半径越来越大
C.将沿轨迹II运动,半径越来越小
D.将沿轨迹II运动,半径越来越大
10.一个带电粒子沿垂直于磁场的方向射入一匀强磁场,粒子的一段径迹如图4所示,径迹上的每一小段可近似看成圆弧.由于带电粒子使沿途的空气电离,粒子的能量逐渐减小(带电量不变).从图中可以确定()
A.粒子从a到b,带正电
B.粒子从b到a,带正电
C.粒子从a到b,带负电
D.粒子从b到a,带负
二、多项选择题(每小题4分,共16分)
11.一个矩形线圈在匀强磁场中转动产生的交流电动势为.关于这个交变电流,下列说法中正确的是()
A.交变电流的频率为100HzB.电动势的有效值为220V
C.电动势的峰值约为311VD.t=0时,线圈平面与中性面垂直
12.温度能明显地影响金属导体和半导体材料的导电性能,在下图中所示的图线分别为某金属导体和某半导体的电阻随温度变化的关系曲线,则( )
A.图线1反映半导体材料的电阻随温度的变化关系
B.图线2反映金属导体的电阻随温度的变化关系
C.图线1反映金属导体的电阻随温度的变化关系
D.图线2反映半导体材料的电阻随温度的变化关系
13.如图所示,带铁芯的电感线圈的电阻与电阻器R的阻值相同,A1和A2是两个完全相同的电流表,则下列说法中正确的是()
A.闭合S瞬间,电流表A1示数小于A2示数
B.闭合S瞬间,电流表A1示数等于A2示数
C.断开S瞬间,电流表A1示数大于A2示数
D.断开S瞬间,电流表A1示数等于A2示数
14.如右图所示,要使电阻R1上有a→b的感应电流
通过,则应发生在()
A.合上K时
B.断开K时
C.K合上后,将变阻器R滑动头c向左移动
D.K合上后,将变阻器R滑动头c向右移动
三、填空题(每小题4分,共12分)
15.电流表的内阻是Rg=200Ω,满刻度电流值是Ig=500A,现欲把这电流表改装成量程为3.0V的电压表,应联一个Ω的电阻。
16.采用电流表内接法电路测电阻时,电压表的示数是1.2V,电流表的示数为0.48A,电流表内阻是0.2Ω,则被测电阻的真实值为______
17.如图所示,以ab为分界面的两个足够大的匀强磁场,方向均垂直于纸面向里,其磁感应强度B1=2B2=B.现有一质量为m,电荷量为q粒子从O点沿图示方向以速度v开始运动,经过时间t=__
粒子重新回到O点.(用题目中提供的已知量表示)
四、实验题(第18小题3分,第19小题9分,共12分)
18.在“测定金属的电阻率”的实验中,用螺旋测微器测量金属丝直径时的刻度位置如图所示,从图中读出金属丝的直径为mm
19.有一个小灯泡上标有“3V0.2A”字样,现要测量其伏安特性曲线,下列器材可供选用:
A.电压表(0一3V,内阻1KΩ)B.电压表(0—15V,内阻5KΩ)
C.电流表(0一0.3A,内阻2Ω)D.电流表(0一0.6A,内阻0.5Ω)
E.滑动变阻器(10Ω,lA)F.滑动变阻器(1000Ω,0.5A)
G.直流电源(6V,内阻不计)另有开关一个、导线若干。
①实验中电压表应选____,电流表应选_____,滑动变阻器应选_____.(只填器材的字母代号)。
②在虚线框中画出实验电路图
五、计算题(共30分)
20(8分).如图所示,电阻,,当开关断开时,电流表的示数为0.5,当闭合时,的示数为0.75,则电源的电动势和内电阻分别是多少?
21(10分).如图所示,电阻为0.1Ω的导体棒ab沿水平面内的光滑导线框向右做匀速运动,速度为v=5.0m/s,线框左端的电阻R=0.4Ω,线框本身电阻不计,线框宽l=0.4m,处于竖直向下的匀强磁场中,磁感应强度B=0.1T.求:
(1)感应电动势的大小及感应电流的方向
(2)电阻R的功率
22(12分).如右图所示,匀强磁场方向垂直纸面向里,匀强电场方向水平向右,一质量为m,带电荷量为q的微粒以速度v与磁场方向垂直,与电场方向成45°
角射入复合场中,恰能做匀速直线运动,求电场强度E和磁感应强度B的大小.
2019-2020年高二下学期3月监控考试英语试题含答案
I.Listeningprehension15%
SectionA5%(0.5*10)
Directions:
InSectionA,youwillheartenshortconversationsbetweentwospeakers.Attheendofeachconversation,aquestionwillbeaskedaboutwhatwassaid.Theconversationsandthequestionswillbespokenonlyonce.Afteryouhearaconversationandthequestionaboutit,readthefourpossibleanswersonyourpaper,anddecidewhichoneisthebestanswertothequestionyouhaveheard.
1.A.9:
13.B.9:
15.C.9:
30.D.9:
50.
2.A.Camping.B.Watchingfilms.
C.Hobbies.D.Hiking.
3.A.ToseeProfessorWhite.B.Toseethefilm.
C.Tobuysomebooks.D.Togivealecture.
4.A.Atatheatre.B.Atabookingoffice.
C.Atarailwaystation.D.Atarestaurant.
5.A.Teacherandstudent.B.Colleagues.
C.Husbandandwife.D.Classmates.
6.A.Mumstaysathome.B.Mumgoestothestore.
C.Mumgoesforawalk.D.Mumgoestobuyanewspaper.
7.A.Thewomanshouldnotcleanupherroom.
B.Thewomanshouldnotgetthereportback.
C.Thewomanshouldnotwaitforhim.
D.Thewomanshouldnotbothertogettheumbrella.
8.A.Theygoouttoeatatarestaurant.
B.Theygotoseeamovie.
C.Theyvisitcloserelatives.
D.Theyobserveitathome.
9.A.Themanshouldconsumelesssalt.
B.Themanshouldlookathisdiet.
C.Themanshouldaddmoreproteinproductstohisdiet.
D.Themanshouldeatfewerfattyfoodsandmorefruitsandvegetables.
10.A.Theteacherpostponedthemeeting.
B.Therewon’tbeatestthisafternoon.
C.Thestudentswillbeattendingthemeeting.
D.ThestudentstookanEnglishtestthatafternoon.
SectionBPassages6%
InSectionB,youwillheartwoshortpassages,andyouwillbeaskedthreequestionsoneachofthepassages.Thepassageswillbereadtwice,butthequestionswillbespokenonlyonce.Whenyouhearaquestion,readthefourpossibleanswersonyourpaperanddecidewhichonewouldbethebestanswertothequestionyouhaveheard.
Questions11through13arebasedonthefollowingpassage.
11.A.Queuingforelectrically-drivencars.
B.Lookingforwhattheywanttobuy.
C.Carryingshoppingaround.
D.Stayingatthestorefortwohours.
12.A.Theredesign.B.Thespace.
C.Thetechnology.D.Theprice.
13.A.Totheexit.B.Totheshelf.
C.Totheshoppers’homes.D.Tothecars.
Questions14through16arebasedonthefollowingpassage.
14.A.17.B.Morethan70.C.100.D.Morethan700.
15.A.Theygotthefoodfromthegovernment.
B.Theybroughtthemselves.
C.Peoplegavethemforfree.
D.Theyboughtfromthestoresnearby.
16.A.TheUnitedFederationofTeachers.
B.TheWesternUnion.
C.TheTransportWorkersUnionLocal100.
D.AmericanPresidentBarackObama.
SectionCLongerConversations4%
InSectionC,youwillheartwolongerconversations.Theconversationswillbereadtwice.Afteryouheareachconversation,youarerequiredtofillinthenumberedblankswiththeinformationyouhaveheard.Writeyouranswersonyouranswersheet.
Blanks17through20arebasedonthefollowingconversation.
pletetheform.WriteONEWORDforeachanswer.
WhyisAnnnotsatisfiedwithherapartment?
Alittle17fromcampus.
HowmuchcanAnnafford?
Under$18amonth.
WhatkindofapartmentisAnnlookingfor?
Anewapartmentwith19.
WhatelsedoesAnnwant?
A20space.
II.Grammar16%
Readthefollowingtwopassages.Fillineachblankwithoneproperwordortheproperformofthegivenwordtomakethepassagecoherent.Makesurethatyouranswersaregrammaticallycorrect.
(A)
Thebeliefthatanimalscanpredictearthquakeshasbeenaroundforcenturies.
In373B.C.,itisrecordedthatanimals,includingrats,snakesandweasels,desertedtheGreekcityofHelicejustdays(25)_________aquakeruinedtheplace.
Sincethen,therehavebeensimilarstoriesofanimalpredictionofearthquakesacrossthecenturies.Ithasbeenreportedthatfishmovefiercely,chickensstoplayingeggsandbeesleavetheirhiveinapanic.Lotsofpetownerssaidthatthey(26)_________(witness)theircatsanddogsactingstrangelybeforethegroundshook—barkingorwhiningfornoreason,orshowingsignsofnervousness.
Butwhatanimalscansense,iftheydofeelanythingatall,isamystery.OneideaisthatanimalsfeeltheEarthshakebeforehumans.Otherideassuggestthey(27)_________detectelectricalchangesintheairorgasreleasedfromtheEarth.
Earthquakesareasuddenphenomenon.Seismologists(地震学家)havenowayofknowingexactlywhenorwherethenextonewillhit.About500,000detectablequakesoccurintheworldeachyear.(28)_________those,100,000canbefeltbyhumans,and100causedamage.
Japanisoneofthecountries(29)_________mostearthquakeshappeneveryyear.ScientiststherehavelongstudiedanimalsinhopesofdiscoveringwhattheyhearorfeelbeforetheEarth(30)_________(shake),inordertousethatsense(31)_________apredictiontool.
Ontheotherhand,Americanseismologistsareskeptical,(32)__________________therehavebeenrecordedcasesofstrangebehaviorbeforeearthquakes.
(B)
It’sjustasmall,whiteenvelope--withoutasinglewordonit--stuckamongthebranchesofourChristmastree.Ithaspeeked(露出)throughthebranchesofourtreeforthepast10years.
Itallbegan(33)_________myhusbandMikehatedthemercialaspectsofChristmas.(34)________(know)that,Idecidedoneyeartobypasstheusualpresents.IreachedforsomethingspecialforMike.Theinspirationcameinanunusualway.
OursonKevin,whowas12thatyear,wasamemberofhisschool’swrestlingteam.ShortlybeforeChristmas,therewasamatchagainstateamsponsoredbyalocalchurch.Thekidsofthatteamwerewearingraggedsneakers.Andasthematchbegan,I(35)________(alarm)toseethatthosekidswerewrestlingwithoutprotectivehelmets.
Kevin’steamhadtheupperhandinthematch,buttheotherteamdidn’tgiveupeasily.Intheend,however,theystilllostthematch.Mike,(36)________(seat)besideme,shookhisheadsadly,“Iwishjustoneofthemcouldhavewon,”hesaid.“Theyhavealotofpotential,but(37)________(lose)likethiscouldtaketheheartrightoutofthem.”Mikehadcoachedfootballandbaseballforkids;
helovedkidsandheknewthem.
That’swhentheideaforhispresentcame.Thatafternoon,Iboughtsomewrestlinghelmetsandshoesandsentthemanonymouslyto(38)________church.OnChristmasEve,Iplacedtheenvelopeonthetree,thenoteinsidetellingMikewhatIhaddoneandthatthiswashisgiftfromme.Hissmilewas(39)________(bright)thingaboutthatChristmas.ForeachChristmassincethen,Ihavefollowedthetradition–eachyeardoing(40)________aboutthetruespiritofChristmas.
III.Vocabu